Hail history for 80544 · Niwot, CO

In the last three years radar flagged hail over this ZIP on 28 days, 19 of them with stones estimated at one inch or larger, the size where roof damage becomes likely. The largest estimate was 2.5" (tennis ball size) on May 28, 2024.

DateLargest hail (radar est.)Radar signaturesGround reports
July 28, 20260.75" (penny size)1
July 21, 20260.75" (penny size)1
July 8, 20260.75" (penny size)3
July 2, 20261.25" (half dollar size)12
June 24, 20261.75" (golf ball size)263
June 23, 20261" (quarter size)9
June 1, 20261" (quarter size)4
August 27, 20251" (quarter size)2
August 10, 20251.75" (golf ball size)514
August 1, 20250.75" (penny size)1
July 31, 20251" (quarter size)7
July 16, 20251" (quarter size)2
July 11, 20251.25" (half dollar size)211
July 5, 20251" (quarter size)8
June 25, 20251.25" (half dollar size)172
June 24, 20250.75" (penny size)3
June 17, 20252" (hen egg size)572
May 18, 20251.25" (half dollar size)184
April 1, 20251" (quarter size)7
August 14, 20240.75" (penny size)2
August 13, 20240.75" (penny size)1
July 27, 20240.75" (penny size)1
July 20, 20242.25" (hen egg size)679
June 20, 20241.75" (golf ball size)44
June 13, 20241" (quarter size)3
May 30, 20242" (hen egg size)495
May 28, 20242.5" (tennis ball size)151
April 25, 20240.75" (penny size)3

Radar sizes describe the storm over the ZIP, not any one roof. If a date above worries you, a local roofer can inspect for free, and your policy sets the deadline for reporting storm damage.

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Radar sizes are estimates from NEXRAD hail signatures (NOAA Severe Weather Data Inventory) for the largest stones in a storm cell, not a measurement at any one home. Ground reports are National Weather Service local storm reports and the NOAA Storm Events Database, as filed. Town-level data only; this page shows no addresses and no homeowner information.